Teddy speaks in sentences, he is way more articulate than any boy except Josh, and Josh is pretty average in the intelligence .....even he is surprised to be smarter than most in this house....
Grant/Eden/Jax = compete for dumbest, we can never forget Jax can't spell (his name even), and he thinks learning a big word and chucking it in might carry him in a conversation, unfortunately he forgets to look up the meaning.
I think he is the dumbest and can never forget he thinks misogyny is loving girls, and he can't dress himself
Josh and Dom, very average brains, that look super smart next to the super dim level of IQ in this location.
Cass is coming across as quite dim and conniving